TY  - JOUR
AU  - Belle II Collaboration (Abudinen, F. et al
AU  - Marinas, C.
PY  - 2022
DA  - 2022//
TI  - B-flavor tagging at Belle II
T2  - Eur. Phys. J. C
JO  - European Physical Journal C
SP  - 283
EP  - 29pp
VL  - 82
IS  - 4
PB  - Springer
AB  - We report on new flavor tagging algorithms developed to determine the quark-flavor content of bottom (B) mesons at Belle II. The algorithms provide essential inputs for measurements of quark-flavor mixing and charge-parity violation. We validate and evaluate the performance of the algorithms using hadronic B decays with flavor-specific final states reconstructed in a data set corresponding to an integrated luminosity of 62.8 fb(-1), collected at the gamma(4S) resonance with the Belle II detector at the SuperKEKB collider. We measure the total effective tagging efficiency to be epsilon(eff) = (30.0 +/- 1.2(stat) +/- 0.4(syst))% for a category-based algorithm and epsilon(eff) = (28.8 +/- 1.2(stat) +/- 0.4(syst))% for a deep-learning-based algorithm.
SN  - 1434-6044
UR  - https://arxiv.org/abs/2110.00790
UR  - https://doi.org/10.1140/epjc/s10052-022-10180-9
DO  - 10.1140/epjc/s10052-022-10180-9
LA  - English
N1  - WOS:000777159100005
ID  - BelleIICollaborationAbudinen+Marinas2022
ER  -